You can order an 18 or 19 year old but not 17, no. A 17 year old is still in high school and still needs parenting. Never kick a child out too early.
The agreement would be with the parents as the 16 year old is too young to contract. However, there are exceptions that would allow it without the parents for providing shelter.
I'm sorry but yes
Yes.
It will depend on the specific situation. The parents are responsible for the child's welfare.
Yes it can.
No. A 12 year old is a minor and a child. They can not enter into a contract to rent an apartment.
Below 16 means you will need a court order.
No. 18 is the legal age to move out. At 15, the parents can get a restraining order on the 17 year old and have him arrested for contact. Parents have the right to protect their child.
Its definitely not okay. The 17 year old can and will be charged with statutory rape, and if the parents aren't involved in this at all, another big mistake. Parents can get the 17 year old on a restraining order or arrested. Ask the 14 year olds parents this, not strangers online.
Yes they can, though it's very likely the 16 year old will likely never talk to her parents again.
If the 17 year old's parents agree to it, then they can if they want. But by law in most places if you are under 18 years old you still must obey your parents when it comes to things like this.
Not unless they are emancipated or have a court order.